Fiend and Great Old One Pact feats now prevent you from being Good or Lawful, respectively, in character creation, and cannot be trained if Good or Lawful, if multi-classing into your 1st Warlock level. (Note: You may be able to use alignment changing items to get around this. We strongly recommend against this, as you still won't be able to activate your Pact or other Pact-dependent feats.)

The Warlock - Great Old One's Create Thrall duration has been increased to 60 seconds (on a successful saving throw or not.)